XPost: alt.usage.english   
   From: peter@pmoylan.org   
      
   On 23/09/24 01:50, J. J. Lodder wrote:   
   > Peter Moylan  wrote:   
      
   >> The one non-metric measurement that I find useful is "one foot per   
   >> nanosecond".   
   >   
   > Impossible to go that fast,   
      
   Useful, though, to get an estimate of the time delays across the width   
   of a printed circuit board.   
      
   I'm not actually involved in high-speed electronics, but I think the   
   current rule of thumb is that the speed of signals on a printed circuit   
   board is about two-thirds of the speed in a vacuum.   
      
   --   
   Peter Moylan       peter@pmoylan.org    http://www.pmoylan.org   
   Newcastle, NSW   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)